ELI5: Explain Like I'm 5

Implied repo rate

Okay, so let's say you have a toy car that you really like, but you need some money to buy some candy. So, you decide to lend your toy car to your friend for a little while and they promise to give it back to you later. In exchange for lending your toy car, your friend agrees to give you some candy when they return it.

Now, imagine that you are a big company and you have a lot of money, but you need some more money for a little while. Instead of lending your toy car, you decide to lend some of your money to someone else, like a bank or another big company. They promise to give your money back to you later, and in exchange for lending them your money, they agree to pay you some interest.

The interest rate that they agree to pay you is called the repo rate. "Repo" stands for "repurchase agreement," which means that they promise to repurchase your money from you later. But sometimes, the repo rate is not explicitly stated. Instead, people can figure out what it is by looking at other things, like the price of bonds.

Bonds are kind of like IOUs that companies or governments can sell to people. When you buy a bond, you're basically lending them some money and they promise to pay you back later, with interest. But sometimes people don't want to wait until the bond matures to get their money back. So they sell the bond to someone else, usually for a little less than they paid for it.

The difference between what they paid for the bond and what they sold it for is called the "haircut." But if you take into account the interest that they would have made if they had held onto the bond until it matured, you can figure out what the implied repo rate is. It's like figuring out what the interest rate would be if they had just lent their money directly instead of buying the bond.

So, to summarize: the repo rate is like interest that someone pays when they borrow money for a little while. But sometimes you have to figure out what the repo rate is by looking at other things, like the price of bonds. The implied repo rate is like figuring out what the interest rate would be if someone had just lent their money directly instead of buying a bond.
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